<template>
  <scroll id="tab-menu">
    <div class="menu-list">
      <div class="menu-list-item"
           :class="{active:index ===currentIndex}"
           v-for="(item, index) in categories"
           :key="index"
           @click="itemClick(index)">
           {{item.title}}</div>
    </div>
  </scroll>
</template>

<script>
import Scroll from 'components/common/scroll/Scroll'

export default {
  name:'TabMenu',
  components:{
    Scroll
  },
  props:{
    categories:Array
  },
  data() {
    return {
      currentIndex:0
    }
  },
  methods: {
    itemClick(index){
      this.currentIndex = index
      this.$emit('selectItem',index)
    }
  },
}
</script>

<style scoped>
#tab-menu{
  background-color: #f6f6f6;
  height: 100%;
  width: 100px;
  box-sizing: border-box;
}

.menu-list-item{
  height: 45px;
  line-height: 45px;
  text-align: center;
  font-size: 14px;
}

.menu-list-item.active{
  font-weight: 700;
  color: var(--color-high-text);
  background-color: #fff;
  border-left: 3px solid var(--color-high-text);
}
</style>